Article	41021146
Type	HowTo
Product	Engine
Version	4.0.2.1021
Date Added	6/9/2003
Submitted by	Eric
Keywords

Subject

How can I use CreateFilter method in VC++?

Summary

How can I use CreateFilter method in VC++?

Solution

//select all lines,arc,text of layer 0 and/or WALL and change their color to 
red
CString str;
long i = 0;
COleSafeArray 
arrayLayer;
arrayLayer.CreateOneDim(VT_BSTR,2);
i=0;
str = 
"0";
arrayLayer.PutElement(&i,str.AllocSysString());
i++;
str = 
"WALL";
arrayLayer.PutElement(&i,str.AllocSysString());

COleSafeArray arrayType;
arrayType.CreateOneDim(VT_BSTR,3);
i=0;
str 
= "VDLINE";
arrayType.PutElement(&i,str.AllocSysString());
i++;
str 
= "VDARC";
arrayType.PutElement(&i,str.AllocSysString());
i++;
str 
= "VDTEXT";
arrayType.PutElement(&i,str.AllocSysString());
CvdFilterObject filter = 
m_Vdraw.GetActiveDocument().GetSelections().CreateFilter(arrayType,arrayLayer);
//Filters 
the database with the above properties and creates a new SelectionSet
// by 
the name "FILTER1" with the objects that have been asked. If "FILTER1" had
// 
entities before then this SelectionSet is reseted.
CvdSelection mySelSet = 
m_Vdraw.GetActiveDocument().GetSelections().FilterSelect("FILTER1", 
filter);
CvdFigure fig = 
mySelSet.GetStart();
while(fig.m_lpDispatch){
 fig.SetPenColor(1);
 fig.Update();
 m_Vdraw.DrawEntity(fig,0);
 fig 
= mySelSet.GetNext();
}


 


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Last updated : Monday, November 27, 2006